$.fn.imgtransition = function(o){
	var defaults = {
		speed : 5000,
		animate : 1000
	};
	o = $.extend(defaults, o);
	return this.each(function(){
		var arr_e = $("li", this);
		arr_e.css({position: "absolute"});
		arr_e.parent().css({margin: "0", padding: "0", "list-style": "none"});
		function shownext(){
			var active = arr_e.filter(".active").length ? arr_e.filter(".active") : arr_e.first();
			var next =  active.next().length ? active.next() : arr_e.first();
			active.css({"z-index": 9});
			next.css({opacity: 0.0, "z-index": 10}).addClass('active').animate({opacity: 1.0}, o.animate, function(){
				active.removeClass('active').css({"z-index": 8});
			});
		}
		arr_e.first().css({"z-index": 9});
		setInterval(function(){
			shownext();
		},o.speed);
	});
};